Retro Round Frame Reading Glasses. Frame size: 44 mm x 44 mm. Available Frame Colours: Black, Brown, Tortoise, Transparent, Red. Lens Strength Variations: +1.00, +1.25, +1.50, +1.75, +2.00, +2.25, +2.50, +2.75, +3.00, +3.50, +4.00. Lightweight and stylish fashion.